I think it's new in 12.2.10, but it should only show up when using Filestore OSDs. Since you mention that the cluster is new: are you not using Bluestore? That being said: the default crush rule name is "replicated_rule", so "ceph osd pool create <name> <pg> <pg> replicated_rule <expected_objects>" is the right way to create a pool on a filestore cluster now. I think there's some room for improvement from a user experience point of view... Paul -- Paul Emmerich Looking for help with your Ceph cluster? Contact us at https://croit.io croit GmbH Freseniusstr. 31h 81247 München www.croit.io Tel: +49 89 1896585 90 Am Mi., 5. Dez. 2018 um 20:00 Uhr schrieb Orbiting Code, Inc. <support@xxxxxxxxxxxxxxxx>: > > Hello Everyone, > > I have a newly re-created CEPH cluster and cannot create a new pool. I'm using the following syntax, which has previously worked without issue in the past: > > ceph osd pool create rbd 1024 1024 > > The resulting error is: > > "Error ERANGE: For better initial performance on pools expected to store a large number of objects, consider supplying the expected_num_objects parameter when creating the pool." > > I have read the documentation which refers to "expected_num_objects", but cannot figure out what the correct syntax should look like. I have tried the following variation: > > ceph osd pool create rbd 1024 1024 replicated not_sure_what_to_define_for_the_crush_rule_set_name 0 > > But this results in an error stating that the crush rule set doesn't exist. I have not had to define the crush rule set in previous testing. > > If anyone can shed some light on this, I would be most appreciative. > > Thank you, > Todd > -- > > _______________________________________________ > ceph-users mailing list > ceph-users@xxxxxxxxxxxxxx > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com